Trouble Shooting Logic Board Part I - The International Arcade ...
Trouble Shooting Logic Board Part I - The International Arcade ...
Trouble Shooting Logic Board Part I - The International Arcade ...
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GAME: PAC-MAN<br />
SUBJECT: Custom Chips 6-D and 5-S<br />
SERVICE BULLETIN<br />
When the custom chips are not available due to a supply problem the following<br />
alternate plug in units will be used.<br />
1. At location 6-D PC 082-91383-BOO0 280 sync buss controller.<br />
2. At location 5-S PC 082-91384-B000 V-Ram Addresser.<br />
PAC - MAN<br />
V - RAM ADDRESSER (284)<br />
# A082-91384-B000<br />
CHIP NUMBER FUNCTION<br />
74LS02 Quad 2 Input Nor<br />
74LS86 Quad 2 Input Exclusive or<br />
74LS157 Quad 2 to 1 Line Multiplexer<br />
74LS257 Quad 2 to 1 Line Multiplexer-Tri State<br />
Z - 80 SYNC BUSS CONTROLLER (285)<br />
# A082-91383-BOO0<br />
74LS02 Quad 2 Input Nor<br />
74LS74 Dual “D” Flip-Flop<br />
74LS139 Dual 2 to 4 Line Decoder<br />
74LS244 Octal Buffers - Tri State<br />
74LS374 Octal “D” Flip-Flop-Tri State<br />
12
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